JP2024070498A - Yarn Winding Device - Google Patents

Abstract

[Problem] To appropriately guide a yarn from a yarn storage device to a supplying section and to the yarn storage device. [Solution] A winder unit 2 includes a yarn supplying section 6 that supplies a yarn Y, a yarn storage device 40 that stores the supplied yarn Y, a package forming section 8 that winds the yarn Y to form a package 30, a yarn joining device 14 that joins the yarn, a yarn ejection section 60 that guides the yarn Y to the yarn storage device 40 and ejects air in a direction from the yarn storage device 40 toward the yarn supplying section 6 to pull out and eject the yarn Y stored in the yarn storage device 40, thereby guiding the yarn Y to the yarn joining device 14, and a moving section 90 that moves the yarn ejection section 60 to a yarn guiding position when guiding the yarn Y to the yarn storage device 40 and a yarn pulling position when pulling out the yarn Y stored in the yarn storage device 40. [Selected Figure] Fig. 7

Description

The present invention relates to a yarn winding device.

Conventionally, a yarn winding device is known that includes a yarn supplying section that supports a yarn supplying bobbin, a yarn storage device that unwinds the yarn from the yarn supplying bobbin supported by the yarn supplying section and winds up the unwound yarn, a yarn joining device that joins the yarn end of the yarn on the yarn supplying bobbin side to the yarn storage device side, and a yarn winding section that winds up the yarn to form a package. This yarn winding device is provided with a blow-off section (air sucker device) that, if the yarn is broken between the yarn supplying bobbin and the yarn storage device, captures the yarn on the yarn storage device side and blows it into the yarn guide path, thereby drawing the yarn along the guide path and causing it to be captured by the capture section (see, for example, Patent Document 1).

JP 2017-077949 A

The blow-off section is sometimes used to guide the yarn unwound from the yarn supplying bobbin to the yarn storage device. The optimal position of the blow-off section when capturing the yarn on the yarn storage device side and blowing it towards the supply section side is different from the optimal position when guiding the yarn to the yarn storage device. However, in conventional yarn winding devices, the blow-off section is fixed in a predetermined position and is not movable. Therefore, when capturing the yarn on the yarn storage device side and blowing it towards the guide path and/or guiding the yarn to the yarn storage device, the blow-off section is not positioned in the optimal position, and there is a possibility that the yarn will not be guided appropriately.

The object of the present invention is to properly guide the yarn from the yarn storage device to the supply section and to the yarn storage device in a yarn winding device having a yarn storage device.

In the following, several aspects will be described as means for solving the problems. These aspects can be arbitrarily combined as necessary.
A yarn winding device according to one aspect of the present invention includes a supplying unit, a yarn storage device, a winding unit, a yarn joining device, a yarn spouting unit, and a moving unit. The supplying unit supplies the yarn. The yarn storage device stores the yarn supplied from the supplying unit. The winding unit winds the yarn stored in the yarn storage device to form a package. When the yarn is broken between the supplying unit and the yarn storage device, the yarn joining device joins the yarn on the supplying unit side and the yarn on the yarn storage device side.

The yarn ejection unit guides the yarn supplied from the supply unit to the yarn storage device. The yarn ejection unit also ejects air in the direction from the yarn storage device toward the supply unit to pull out the yarn stored in the yarn storage device and eject it toward the supply unit, thereby guiding the yarn to the yarn joining device. The moving unit moves the yarn ejection unit between a yarn guide position and a yarn pull-out position. The yarn guide position is the position of the yarn ejection unit when guiding the yarn supplied from the supply unit to the yarn storage device. The yarn pull-out position is the position of the yarn ejection unit when pulling out the yarn stored in the yarn storage device and ejecting it toward the supply unit.

In the above-mentioned yarn winding device, the moving unit moves the yarn ejection unit between a yarn guiding position where the yarn supplied from the supply unit is guided to the yarn storage device, and a yarn pull-out position where the yarn stored in the yarn storage device is pulled out and ejected toward the supply unit. In this way, the yarn winding device can move the yarn ejection unit to the optimal position for guiding the yarn supplied from the supply unit to the yarn storage device, and the optimal position for pulling out the yarn stored in the yarn storage device and ejecting it toward the supply unit, so that the yarn can be appropriately guided to the yarn storage device and from the yarn storage device to the supply unit.

In the above yarn winding device, the yarn guide positions may include a first position for guiding Z-twisted yarn to the yarn storage device and a second position for guiding S-twisted yarn to the yarn storage device. This allows yarns of different twists (Z-twist, S-twist) to be appropriately guided to the yarn storage device.

In the above yarn winding device, the first position and the second position may be in a line-symmetrical relationship with respect to the center of the yarn storage device. This allows the first position and the second position to be set appropriately.

In the above-mentioned yarn winding device, the yarn pull-out position may be a third position that is intermediate between the first position and the second position. This allows an appropriate yarn pull-out position to be set.

In the above yarn winding device, the yarn pull-out positions may include a fourth position where the Z-twisted yarn is pulled out from the yarn storage device, and a fifth position where the S-twisted yarn is pulled out from the yarn storage device. This allows an appropriate yarn pull-out position to be set according to the twist of the yarn.

In the above yarn winding device, the yarn storage device may have a storage roller. The storage roller winds and stores the yarn. In this case, the yarn guide position may be a position where the end of the yarn ejection section on the yarn storage device side faces outward from the yarn storage device with respect to the tangent line from the end to the side of the storage roller. This prevents the cut yarn from hitting the yarn storage device (storage roller) when the yarn breaks, and allows the yarn to be properly guided.

In the above yarn winding device, the moving section may have a cam, a first arm, and a second arm. The cam is rotatable around a first axis. The first arm has one end that abuts against the side of the cam and the other end that is fixed so as to be rotatable around the second axis, and rotates around the second axis in accordance with the rotation of the cam. The second arm has a yarn ejection section fixed to one end and the other end that is fixed so as to be rotatable around the second axis together with the other end of the first arm. The second arm moves the yarn ejection section to the yarn guiding position and the yarn pulling position in accordance with the rotation of the first arm. This allows the yarn ejection section to be appropriately moved between the yarn guiding position and the yarn pulling position.

In the above yarn winding device, when one end of the first arm abuts against the origin position of the cam, the yarn ejection section may be located at a first position where the Z-twisted yarn is guided to the yarn storage device. This makes it easier to control the yarn ejection section by setting the origin at a position where the yarn ejection section is moved relatively frequently.

In the above-mentioned yarn winding device, the moving unit may rotate the cam in a first direction to move the yarn ejection unit from the yarn pull-out position to a first position where the yarn ejection unit guides the Z-twisted yarn to the yarn storage device. Also, the moving unit may rotate the cam in a second direction opposite to the first direction to move the yarn ejection unit from the yarn pull-out position to the second position where the yarn ejection unit guides the S-twisted yarn to the yarn storage device. This makes it easier to control the yarn ejection unit.

In the above-mentioned yarn winding device, the supply unit may supply the yarn unwound from the yarn supplying bobbin. This allows an automatic winder having a yarn storage device to properly guide the yarn to the yarn storage device and from the yarn storage device to the supply unit.

The supply unit may supply the yarn spun by air force. This allows an air spinning machine having a yarn storage device to properly guide the yarn to the yarn storage device and from the yarn storage device to the supply unit.

The supply unit may supply the yarn spun by the rotational force of the rotor. This allows an open-end spinning machine having a yarn storage device to properly guide the yarn to the yarn storage device and from the yarn storage device to the supply unit.

By making it possible to move the yarn ejection section to the optimal position when guiding the yarn supplied from the supply section to the yarn storage device, and to the optimal position when pulling out the yarn stored in the yarn storage device and ejecting it toward the supply section, it is possible to appropriately guide the yarn to the yarn storage device and from the yarn storage device to the supply section.

FIG. 2 is a diagram showing the configuration of an automatic winder. FIG. 2 is a diagram showing the configuration of a winder unit. FIG. FIG. 4 is a diagram showing the positional relationship between the yarn pooling device and a detection unit. FIG. 4 is a diagram showing the positional relationship between the yarn pooling device and the light-emitting unit. FIG. 4 is a diagram showing the positional relationship between the yarn pooling device and the detection unit. FIG. 4 is a diagram showing a detailed configuration of a moving unit. 13 is a diagram showing a state in which a first arm rotates in accordance with rotation of a cam. FIG. FIG. 4 is a diagram showing a thread guiding position and a thread pulling-out position. 13 is a diagram showing a yarn path when an S-twist yarn is guided to the yarn pooling device with the yarn ejection section disposed at a first position. FIG. 6 is a flowchart showing a package forming operation in the winder unit.

1. First embodiment (1) Automatic winder The first embodiment will be described in detail below. In the description of the drawings, the same or corresponding elements are given the same reference numerals, and duplicated explanations will be omitted. "Upstream" and "downstream" respectively mean upstream and downstream in the running direction of the yarn.

The automatic winder 1 will be described with reference to Figure 1. Figure 1 is a diagram showing the configuration of the automatic winder 1. The automatic winder 1 includes a plurality of winder units 2 (an example of a yarn winding device) arranged side by side, a machine control device 3, a yarn supplying bobbin supply device 4, and a doffing device 5. The automatic winder 1 is also provided with a blower box (not shown).

The winder unit 2 winds the yarn Y onto the winding bobbin 22 to form a package 30. The winder unit 2 unwinds the yarn Y from the yarn supply bobbin 21, temporarily stores the unwound yarn Y in the yarn storage device 40, and then pulls out the yarn Y stored in the yarn storage device 40 and winds it onto the winding bobbin 22 to form a package 30.

The machine control device 3 is configured to be able to communicate with each winder unit 2. The operator of the automatic winder 1 can centrally manage the multiple winder units 2 by appropriately operating the machine control device 3. The machine control device 3 controls the operation of the yarn supplying bobbin supply device 4 and the doffing device 5.

The yarn supplying bobbin supplying device 4 sets the yarn supplying bobbins 21 one by one on the transport tray 26. The yarn supplying bobbin supplying device 4 supplies the yarn supplying bobbins 21 set on the transport tray 26 to each of the multiple winder units 2.

When the package 30 in the winder unit 2 becomes full (a specified amount of yarn Y is wound), the doffing device 5 travels to the position of the winder unit 2 and removes the full package 30. The doffing device 5 sets a winding bobbin 22 on which yarn Y is not wound to the winder unit 2 from which the package 30 has been removed.

(2) Winder Unit (2-1) General Configuration of Winder Unit The configuration of the winder unit 2 will be described below. First, the general configuration of the winder unit 2 will be described with reference to Fig. 2. Fig. 2 is a diagram showing the configuration of the winder unit 2. The winder unit 2 includes a yarn supplying unit 6 (an example of a supplying unit), a yarn pooling device 40, a yarn guiding unit 7, a package forming unit 8 (an example of a winding unit), and a control unit 25.

The yarn supplying section 6 is configured to support the yarn supplying bobbin 21 set on the transport tray 26 at a predetermined position and to be able to unwind the yarn Y from the yarn supplying bobbin 21. When all the yarn Y has been unwound from the yarn supplying bobbin 21, the yarn supplying section 6 ejects the core tube of the yarn supplying bobbin 21 on which the yarn Y is not wound, and receives a new yarn supplying bobbin 21 from the yarn supplying bobbin supply device 4.

The yarn storage device 40 is disposed in the middle of the yarn travel path formed between the yarn supplying section 6 and the package forming section 8. The yarn storage device 40 is provided in a position upstream of the wax application device 70 in the travel direction of the yarn Y. The yarn storage device 40 winds and temporarily stores the yarn Y unwound in the yarn supplying section 6. The yarn storage device 40 supplies the stored yarn Y to the package forming section 8.

The yarn guide section 7 is disposed between the yarn supply section 6 and the yarn storage device 40, and guides the yarn Y supplied from the yarn supply section 6 between the yarn supply section 6 and the yarn storage device 40. When the yarn Y is broken between the yarn supply section 6 and the yarn storage device 40, the yarn guide section 7 joins the end of the yarn Y present on the yarn supply section 6 side with the end of the yarn Y present on the yarn storage device 40 side.

The package forming unit 8 winds the yarn Y supplied from the yarn storage device 40 onto a winding bobbin 22 to form a package 30. The package forming unit 8 has a cradle 23 and a traverse drum 24. The cradle 23 rotatably supports the winding bobbin 22 (or the package 30). The cradle 23 is configured so that the outer peripheral surface of the package 30 it supports can come into contact with the outer peripheral surface of the traverse drum 24.

The traverse drum 24 drives the winding bobbin 22 while traversing the yarn Y. In detail, the traverse drum 24 is driven to rotate by a drive source (e.g., an electric motor, etc.) not shown, and rotates while in contact with the outer peripheral surface of the winding bobbin 22 or the package 30, thereby rotating the winding bobbin 22. This allows the yarn Y stored in the yarn storage device 40 to be unwound and pulled out, and wound onto the winding bobbin 22.

A traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and this traverse groove allows the yarn Y to be traversed at a predetermined width. With the above configuration, the yarn Y can be wound around the winding bobbin 22 while being traversed to form a package 30 of a predetermined shape.

The control unit 25 is a computer system equipped with hardware such as a CPU, a storage device (ROM, RAM, etc.), and various interfaces. The storage device stores software such as a control program. The control unit 25 controls each component of the winder unit 2 through cooperation between the hardware and software. The control unit 25 is configured to be able to communicate with the machine control device 3. This allows the operation of the multiple winder units 2 equipped in the automatic winder 1 to be centrally managed by the machine control device 3.

The winder unit 2 has a wax applicator 70. The wax applicator 70 is disposed between the yarn storage device 40 and the package forming section 8. The wax applicator 70 applies wax to the yarn Y traveling from the yarn storage device 40 toward the package forming section 8.

(2-2) Yarn Storage Device Next, a detailed configuration of the winder unit 2 will be described. First, a detailed configuration of the yarn storage device 40 will be described with reference to FIG. 2 and FIG. 3. FIG. 3 is an enlarged view of the yarn storage device 40. The yarn storage device 40 includes a storage roller 41 on which the yarn Y can be wound, a drive motor 45 that rotates and drives the storage roller 41, and a cover 47. The storage roller 41 winds the yarn Y around a storage area A on the outer circumferential surface 41d of the storage roller 41 to temporarily store the yarn Y. The storage roller 41 is supported on the machine base (frame) of the automatic winder 1 so as to be rotatable about a rotation axis C1 that is slightly inclined with respect to the horizontal direction. As shown in FIG. 2 and FIG. 3, tapered portions 41a and 41b whose diameters increase toward the ends are formed on both ends of the storage roller 41 in the axial direction. The portion between the two tapered portions 41a, 41b is a cylindrical portion 41c with a constant diameter, and its outer circumferential surface 41d is a storage area A around which the yarn Y is wound. The outer circumferential surface 41d of the cylindrical portion 41c is mirror-finished. The two tapered portions 41a, 41b on both ends prevent the yarn Y wound around the cylindrical portion 41c from falling off.

A ring member 42 is wound around the outer circumferential surface 41d of the cylindrical portion 41c of the storage roller 41. The ring member 42 is formed in a circular ring shape, for example, from rubber. The ring member 42 is attached to the boundary between the cylindrical portion 41c and the tapered portion 41b at the tip side. The ring member 42 is a tension ring that surrounds the yarn Y drawn out from the storage roller 41 by the package forming unit 8 and contacts the yarn Y to provide resistance. The ring member 42 is attached to the cylindrical portion 41c by an elastic force that tightens it radially inward. The ring member 42 provides resistance to the yarn Y drawn out from the storage roller 41 by the elastic force. The ring member 42 provides an appropriate tension to the yarn Y drawn out from the storage roller 41, stabilizing the unwinding of the yarn Y from the storage roller 41.

In the outer peripheral surface 41d of the storage roller 41, a first recess (recess) 43a is provided in a region that spans the mounting position of the ring member 42 in a direction along the rotation axis C1. In other words, when viewed from the radial outside of the storage roller 41, the first recess 43a is provided so as to pass through the mounting position of the ring member 42 and intersects with the mounting position, and a part of the first recess 43a overlaps with the mounting position. Here, the first recess 43a forms a groove portion that extends in a direction along the rotation axis C1 from one end to the other end of the storage roller 41. The first recess 43a has, for example, the same cross-sectional shape in its longitudinal direction and is formed in a substantially rectangular cross-section. The outer peripheral surface 41d of the storage roller 41 is further provided with a second recess (recess) 43b. The second recess (recess) 43b is a recess (so-called downgage) that is provided so that a recess (so-called sink mark) is not formed when molding a boss or reinforcing rib for embedding a sensor magnet on the inner circumferential surface 41g of the cylindrical portion 41c.

The drive motor 45 rotates the storage roller 41 in a direction to wind the yarn Y from the yarn supplying section 6. The drive motor 45 can also rotate the storage roller 41 in a direction opposite to the winding direction. The drive motor 45 is a position-controllable motor such as a DC brushless motor, a stepping motor, or a servo motor.

From the tapered portion 41b on the other end side of the storage roller 41 (the upstream side of the storage roller 41), the yarn Y wound around the storage roller 41 is pulled out and sent downstream (towards the package forming section 8). At the tapered portion 41b, the yarn Y on the storage roller 41 is pulled out downstream via a pull-out guide 37 located on an extension of the rotation axis C1 of the storage roller 41. The yarn Y wound around the storage roller 41 is unwound through the gap with the ring member 42, which provides an appropriate tension to the unwound yarn Y.

The detection unit 53 is disposed near the outer circumferential surface 41d of the cylindrical portion 41c of the storage roller 41. For example, the detection unit 53 can detect when the yarn Y of the storage roller 41 is equal to or greater than a predetermined upper limit amount, and when it is less than a predetermined lower limit amount. The detection unit 53 may detect from the upper limit amount to the lower limit amount as a detection range. The detection range may be a wider range including a portion exceeding the upper limit amount and a portion below the lower limit amount. This makes it possible to detect, for example, an excess amount relative to the upper limit value. In this embodiment, it is detected from within the detection range that the yarn Y of the storage roller 41 is equal to or greater than a predetermined upper limit amount, and when it is less than a predetermined lower limit amount. The above terms "above" and "below" can be appropriately expressed as "exceed" and "below". The detection result by the detection unit 53 is acquired by the control unit 25. The control unit 25 controls the drive motor 45 based on the detection result of the detection unit 53 so that the storage amount (wrap amount) of the storage roller 41 falls between the upper limit amount and the lower limit amount.

The detection unit 53 detects the yarn Y wound around the outer peripheral surface 41d of the storage roller 41. As shown in Figs. 4A to 4C, the detection unit 53 forms a detection unit 50 together with a light-emitting unit 55 that emits light toward the storage roller 41. That is, the detection unit 50 is configured to include the detection unit 53 and the light-emitting unit 55. The detection unit 53 and the light-emitting unit 55 are housed in a housing 51 and fixed to the machine base of the automatic winder 1. Fig. 4A is a diagram showing the positional relationship between the yarn storage device 40 and the detection unit 53. Fig. 4B is a diagram showing the positional relationship between the yarn storage device 40 and the light-emitting unit 55. Fig. 4C is a diagram showing the positional relationship between the yarn storage device 40 and the detection unit 50.

The detection unit 53 has a line sensor 53A that detects the presence or absence of yarn Y in a straight section ST1 that connects between an upstream end 41f in the running direction of the yarn Y and a downstream end 41e in the running direction of the yarn Y in the storage area A formed on the outer circumferential surface 41d of the cylindrical portion 41c, and a lens 53B that reduces the incident light. An example of the line sensor 53A is a CCD image sensor or a CMOS image sensor that acquires the amount of light using photodiodes arranged in a row. The line sensor 53A receives light through a lens 53B that reduces the incident light. In this embodiment, the line sensor 53A is provided so that the extension direction of the straight section ST1 is parallel to the extension direction of the rotation axis C1, but the line sensor 53A may be provided so that the extension direction of the straight section ST1 intersects with the extension direction of the rotation axis C1.

The light-emitting unit 55 has two light sources 55B, 55B, and an optical waveguide 55C that converts the light emitted from the two light sources 55B, 55B into surface emission and emits the light toward the storage roller 41. Some of the components of the optical waveguide 55C include a diffusion plate such as an acrylic plate that guides the light. An example of the two light sources 55B, 55B is an LED (Light Emitting Diode), which is provided on the LED board 55A. The number of light sources is not limited to two.

The line sensor 53A is disposed at a position such that light from the light-emitting unit 55 that reflects the outer peripheral surface 41d of the storage roller 41 is not incident, and light from the light-emitting unit 55 that reflects the yarn Y stored in the storage roller 41 is incident. For example, as shown in FIG. 4C, the line sensor 53A emits light at an irradiation angle θ in the range of 0° to 30°. "The line sensor 53A is disposed so that light from the light-emitting unit 55 that reflects the outer peripheral surface 41d of the storage roller 41 is not incident" means that the light emitted from the light-emitting unit 55 at such an angle is totally reflected by the outer peripheral surface 41d of the storage roller 41, and the line sensor 53A is disposed at a position such that the reflected light is not incident.

Here, one of the straight lines perpendicular to the rotation axis C1 is virtually set as the first straight line L1, and one of the straight lines parallel to the first straight line L1 and tangent to the outer peripheral surface 41d of the storage roller 41 is virtually set as the second straight line L2. In this embodiment, in a plan view seen from the direction in which the rotation axis C1 of the storage roller 41 extends, the light emitting unit 55 is disposed on the first straight line L1, or between the line sensor 53A and the first straight line L1 in the arrangement direction of the first straight line L1 and the second straight line L2. This allows the light emitting unit 55 to emit light to a part of the storage roller 41 located between the first straight line L1 and the second straight line L2. The line sensor 53A is disposed between the second straight line L2 and the first straight line L1. The light receiving direction of the line sensor 53A is approximately parallel to the first straight line L1. In other words, light is incident on the line sensor 53A from a direction approximately parallel to the first straight line L1. The cover 47 is disposed in an area on the opposite side of the second straight line L2 from the side on which the first straight line L1 is disposed in the direction in which the first straight line L1 and the second straight line are aligned.

The cover 47 is provided so as to face a part of the outer peripheral surface 41d of the storage roller 41. The cover 47 is provided at least part of the traveling direction of the light from the light emitting unit 55 reflected by the outer peripheral surface 41d of the storage roller 41. The cover 47 may also be provided at least part of the traveling direction of the light from the light emitting unit 55 that does not reflect the outer peripheral surface 41d of the storage roller 41. At least a part of the facing surface 47a, which is the part of the cover 47 where the light from the light emitting unit 55 is incident, is formed to have a color that reduces the reflectance of light (for example, black). By reducing the reflectance in this way, it is possible to prevent the reflected light from the cover 47 from being incident on the storage roller 41. This makes it possible to prevent the light reflected from the yarn Y from being detected by the line sensor 53A, which makes it impossible to properly detect the light.

In addition, even if the cover 47 is not provided, the periphery of the yarn storage device 40 may be configured so that no structural parts that reflect light in the traveling direction of the light from the light-emitting unit 55 are arranged. Even if a structural part that reflects light in the traveling direction of the light from the light-emitting unit 55 is arranged, if the structure is arranged in a position where the reflected light is sufficiently attenuated by the time it reaches the line sensor 53A, it is possible to prevent the light reflected from the yarn Y from being unable to be properly detected.

2, a detailed configuration of the yarn guiding unit 7 that guides the yarn Y between the yarn supplying unit 6 and the yarn pooling device 40 will be described. The yarn guiding unit 7 is disposed in the yarn path (yarn traveling path) of the yarn Y, and includes an unwinding assisting device 10, a lower yarn feeler 11, a tension applying unit 12, a capturing device 13, a yarn joining device 14, a yarn monitoring device 16, a yarn spouting unit 60, and a yarn guiding member 80.

The unwinding assist device 10 assists in the unwinding of the yarn Y by bringing a movable member 27 into contact with a balloon formed above the yarn supplying bobbin 21 as the yarn Y unwound from the yarn supplying bobbin 21 swings around and appropriately controlling the size of the balloon.

The lower thread feeler 11 is disposed downstream of the unwinding assist device 10 and in close proximity to the unwinding assist device 10. The lower thread feeler 11 determines whether or not the thread Y supplied from the unwinding assist device 10 is present.

The tension applying unit 12 applies a predetermined tension to the running yarn Y. The tension applying unit 12 applies a predetermined tension to the yarn Y based on the tension of the yarn Y detected by a tension sensor (not shown). The tension applying unit 12 is configured as a gate type in which movable comb teeth are arranged relative to fixed comb teeth, and applies a predetermined resistance by running the yarn Y between the comb teeth. The movable comb teeth are configured to be movable, for example, by a solenoid, so that the comb teeth are in an interlocking state or a released state. This allows the tension applying unit 12 to adjust the tension applied to the yarn Y. The configuration of the tension applying unit 12 is not particularly limited, and may be, for example, a disk-type tension applying unit.

The capture device 13 is disposed downstream of the tension applying section 12. The capture device 13 has a first capture section 13A and a second capture section 13B. In this embodiment, the first capture section 13A and the second capture section 13B are integrated and configured as a single component. Each of the first capture section 13A and the second capture section 13B is connected to a negative pressure source (not shown).

The first capture section 13A is configured as a cylindrical member with an opening at the tip. The first capture section 13A generates a suction air flow during yarn splicing, and sucks in the internal space of the yarn guide member 80 (described later), thereby sucking in and capturing the yarn Y on the yarn pooling device 40 side.

The second capturing section 13B is configured as a cylindrical member with an opening formed at the tip. The second capturing section 13B is provided so as to be able to swing. The second capturing section 13B swings between a capturing position (position shown by a solid line in FIG. 2) where it captures the yarn Y supplied from the unwinding assist device 10 side, and a guide position (position shown by a dashed line in FIG. 2) where it guides the yarn Y to the yarn joining device 14. The capturing position may also be a standby position of the second capturing section 13B.

When the second capture unit 13B is in the capture position and approaching the yarn path downstream of the lower yarn feeler 11, it generates a suction air flow at its tip to suck in and capture the yarn end from the yarn supplying bobbin 21. When the yarn Y is cut by the cutter 15, the second capture unit 13B sucks in and captures the yarn end of the cut yarn Y on the yarn supplying bobbin 21 side. The second capture unit 13B may also be configured to suck in and remove fluff adhering to the traveling yarn Y by generating a suction air flow at its tip.

When the yarn Y is captured by the second capturing part 13B, immediately after a new yarn supplying bobbin 21 is supplied to the yarn supplying part 6, an auxiliary blowing part 28 is provided to blow the yarn end to a position downstream of the lower yarn feeler 11 (the tip of the second capturing part 13B).

The auxiliary blowing section 28 blows compressed air into the hollow-shaped transport tray 26 and the yarn supplying bobbin 21, creating an air flow at the tip of the yarn supplying bobbin 21 that blows the yarn Y of the yarn supplying bobbin 21 toward the lower thread feeler 11. When a newly supplied yarn supplying bobbin 21 is supported by the yarn supplying section 6, the auxiliary blowing section 28 operates to reliably send the yarn end of the yarn supplying bobbin 21 toward the lower thread feeler 11.

The yarn joining device 14 joins the divided yarn Y. When the yarn Y is cut by the cutter 15 after the yarn monitoring device 16 detects a yarn defect, when the yarn Y is cut while being unwound from the yarn supplying bobbin 21, or when the yarn Y is broken between the yarn supplying bobbin 21 and the yarn storage device 40, such as when the yarn Y is broken, or when the yarn supplying bobbin 21 is replaced, the yarn joining device 14 joins the end of the yarn Y on the yarn supplying bobbin 21 side to the end of the yarn Y on the yarn storage device 40 side. The yarn joining device 14 is disposed at a position slightly removed from the yarn path. The yarn joining device 14 can join the introduced yarn ends to make the yarn Y continuous. The yarn joining device 14 can be a device that uses a fluid such as compressed air or a mechanical device.

The yarn monitoring device 16 detects yarn defects such as slub and foreign matter contamination by monitoring the thickness of the yarn Y with an appropriate sensor. A cutter 15 is disposed in a position adjacent to the yarn monitoring device 16 on the upstream side of the yarn monitoring device 16. The cutter 15 immediately cuts the yarn Y when the yarn monitoring device 16 detects a yarn defect. The cutter 15 and the yarn monitoring device 16 are housed in a common housing 19. The housing 19 that houses the yarn monitoring device 16 is disposed downstream of the yarn joining device 14.

The yarn ejection unit 60 is disposed near the tapered portion 41a on one end side of the storage roller 41 (the upstream side of the storage roller 41), and is composed of a thin cylindrical member through which the yarn Y can pass. The mouth of the yarn ejection unit 6 on the yarn supplying unit 6 side can eject compressed air in the direction from the yarn storage device 40 to the yarn supplying unit 6. If the yarn Y becomes disconnected between the yarn supplying bobbin 21 and the yarn storage device 40, the yarn ejection unit 60 ejects air in the direction from the yarn storage device 40 to the yarn supplying unit 6, thereby sucking in and capturing the end of the yarn Y on the yarn storage device 40 side, and blowing it into the guide path of the yarn guide member 80.

On the other hand, during normal yarn winding, the yarn ejection section 60 guides the yarn Y supplied from the yarn supply section 6 to the tapered section 41a on one end side of the storage roller 41. When the drive motor 45 is driven to rotate the storage roller 41 in one direction, the yarn Y guided to the tapered section 41a on one end side of the storage roller 41 by the yarn ejection section 60 is sequentially wound around the cylindrical section 41c while pushing up the previous yarn layer from one end side (upstream side). As a result, the yarn Y already wound around the outer circumferential surface 41d of the storage roller 41 is pushed by the newly wound yarn Y and is sequentially sent to the other end side (downstream side). As a result, the yarn Y is aligned in a spiral shape on the outer circumferential surface of the cylindrical section 41c of the storage roller 41 and regularly wound from one end side to the other end side.

As will be described in detail later, the yarn ejection unit 60 can be moved by the moving unit 90 between an optimal position (called the yarn guide position) for guiding the yarn Y supplied from the yarn supply unit 6 to the storage roller 41, and an optimal position (called the yarn pull-out position) for drawing out the yarn end of the yarn Y stored in the yarn storage device 40 by suction and guiding it to the yarn joining device 14 (the guide path of the yarn guide member 80).

The yarn guide member 80 is a curved cylindrical member, and an opening is formed at each of both longitudinal ends. One opening of the yarn guide member 80 is arranged close to the mouth of the yarn ejection section 60 on the yarn supplying section 6 side. The other opening is arranged facing the first capture section 13A. A guide path is formed inside the yarn guide member 80. The guide path connects the openings at both ends of the yarn guide member 80 so as to bypass the yarn monitoring device 16, the yarn joining device 14, etc. A slit is formed along the entire length of the yarn guide member 80, which penetrates to the guide path.

When the yarn Y is broken between the yarn supplying bobbin 21 and the yarn storage device 40, the yarn guiding member 80 guides the yarn Y blown into the guide path by the yarn ejection unit 60 along the guide path to the first capture unit 13A, and the guided yarn Y is captured by the first capture unit 13A. Since the yarn guiding member 80 has a slit formed along its entire length that penetrates to the guide path, the yarn guiding member 80 can pull the yarn Y captured by the first capture unit 13A out of the guide path of the yarn guiding member 80 and guide it toward the yarn joining device 14.

(2-4) Moving Section Hereinafter, the detailed configuration of the moving section 90 that moves the yarn spouting section 60 will be described with reference to Fig. 5. Fig. 5 is a diagram showing the detailed configuration of the moving section 90. The moving section 90 has a cam 91, a first arm 92, a second arm 93, and a position sensor 94. The cam 91 is provided on a casing CH so as to be rotatable around a first axis A1. The casing CH is fixed onto a housing 19 that houses the cutter 15 and the yarn monitoring device 16.

A first pulley 91A is fixed to the cam 91. A belt 91B is looped around the first pulley 91A. A second pulley 91C is looped around the side of the belt 91B opposite to the side around which the first pulley 91A is looped. The second pulley 91C is fixed to the output shaft of a motor 91D. The rotation of the output shaft of the motor 91D is transmitted to the cam 91 by the second pulley 91C, the belt 91B, and the first pulley 91A, causing the cam 91 to rotate around the first axis A1. The rotation of the motor 91D is controlled by the control unit 25.

The distance of the side surface PH of the cam 91 against which the first arm 92 abuts to the first axis A1 (i.e., the radius of the cam 91) increases as the side surface PH moves away from the reference position (called the origin O) in the counterclockwise direction in Figure 5 from the origin O.

The first arm 92 is an elongated member. One end of the first arm 92 abuts against the outer periphery of the cam 91. Meanwhile, the other end of the first arm 92 is fixed to the housing CH so as to be rotatable around the second axis A2 parallel to the first axis A1. Since the distance between the side surface PH of the cam 91 and the first axis A1 increases with distance from the origin O, the distance between the abutment position of the first arm 92 and the cam 91 and the first axis A1 increases as the cam 91 rotates (clockwise in FIG. 5). As shown in FIG. 6, the distance between the abutment position of the first arm 92 and the side surface PH of the cam 91 and the first axis A1 increases with the rotation of the cam 91, so that the first arm 92 rotates around the second axis A2 with the rotation of the cam 91. FIG. 6 is a diagram showing the state in which the first arm 92 rotates with the rotation of the cam 91.

The second arm 93 is a long, thin member, and the yarn ejection part 60 is fixed to one end of the second arm 93. Meanwhile, the other end of the second arm 93 is attached to the first arm 92 so as to be rotatable around the second axis A2. As a result, the second arm 93 rotates around the second axis A2 in accordance with the rotation of the first arm 92. As the second arm 93 rotates around the second axis A2, the yarn ejection part 60 fixed to one end of the second arm 93 moves.

The position sensor 94 detects the second arm 93 to detect whether one end of the second arm 93 is in contact with the origin O of the cam 91. When one end of the second arm 93 is to be in contact with the origin O of the cam 91, the control unit 25 moves the cam 91 so that one end of the first arm 92 enters the semicircular portion on the origin O side of the cam 91, and when the second arm 93 is detected by the position sensor 94, it determines that one end of the second arm 93 is in contact with the origin O of the cam 91. The position sensor 94 is, for example, a magnet sensor.

(2-5) Position of the Yarn Spouting Section Hereinafter, with reference to Fig. 7, a yarn guiding position, which is the position of the yarn spouting section 60 when guiding the yarn Y from the yarn supplying section 6 to the yarn pooling device 40, and a yarn pull-out position, which is the position of the yarn spouting section 60 when pulling out the yarn Y from the yarn pooling device 40, will be described. Fig. 7 is a diagram showing the yarn guiding position and the yarn pull-out position.

First, the yarn guide position will be described. The yarn Y is guided from the yarn supplying section 6 side to the yarn storage device 40 by the rotation of the cylindrical storage roller 41 of the yarn storage device 40. When guiding the Z-twisted yarn Y from the yarn supplying section 6 side to the yarn storage device 40, the storage roller 41 is rotated in the first storage roller rotation direction. In the example shown in FIG. 7, the first storage roller rotation direction is counterclockwise. In this case, the yarn ejection section 60 is disposed to the right of the center line of the storage roller 41 in the example shown in FIG. 7. In addition, the end of the yarn ejection section 60 on the yarn storage device 40 side is directed outward from the yarn storage device 40 (storage roller 41) with respect to the tangent line from the end to the right side surface of the storage roller 41 (i.e., the yarn path of the Z-twisted yarn Y). The yarn guide position when guiding the Z-twisted yarn Y from the yarn supplying section 6 side to the yarn storage device 40 is the first position P1.

Since the first position P1 is located to the right of the center line of the yarn storage device 40 and toward the outside of the yarn storage device 40 with respect to the tangent line from the end of the yarn ejection section 60 to the side of the storage roller 41, when the Z-twisted yarn Y is cut, the cut yarn Y does not fly out from the end of the yarn ejection section 60 and collide with the yarn storage device 40 (storage roller 41). As a result, it is possible to prevent the yarn Y colliding with the yarn storage device 40 from causing a hidden yarn (where another part of the yarn Y goes under the stored yarn Y) or a double outlet (where the yarn Y is pulled out in a double layer), and the Z-twisted yarn Y can be properly guided to the yarn storage device 40.

In the moving section 90 described with reference to Figs. 5 and 6, when one end of the first arm 92 abuts against the origin O of the side PH of the cam 91 (as shown in Fig. 5), the yarn ejection section 60 is arranged to be located at the first position P1. In the winder unit 2, the package 30 is formed more frequently using the Z-twisted yarn Y than the S-twisted yarn Y. Therefore, when the first arm 92 abuts against the origin O of the side PH of the cam 91, the yarn ejection section 60 is arranged to be located at the first position P1 when guiding the Z-twisted yarn Y to the yarn storage device 40, making it easier to control the yarn ejection section 60. For example, the frequency with which the yarn ejection section 60 is moved to the second position P2 described later can be reduced.

The winder unit 2 can form not only Z-twisted yarn Y, but also S-twisted yarn Y packages 30, which have a different twist. On the other hand, the inventor discovered that when guiding S-twisted yarn Y from the yarn supplying section 6 to the yarn storage device 40 to form the S-twisted yarn Y package 30, rotating the storage roller 41 in the first storage roller rotation direction described above significantly shortens the life of the ring member 42. In other words, the inventor discovered that the rotation direction of the storage roller 41 depends on the twist of the yarn Y. Therefore, when guiding S-twisted yarn Y from the yarn supplying section 6 to the yarn storage device 40, the storage roller 41 is rotated in the opposite direction to the first storage roller rotation direction (clockwise in the example shown in FIG. 7) (referred to as the second storage roller rotation direction).

In addition, when the yarn ejection unit 60 is positioned at the first position P1 and the storage roller 41 is rotated in the second storage roller rotation direction to guide the yarn Y to the yarn storage device 40, as shown in FIG. 8, the yarn Y is bent significantly on the yarn storage device 40 side of the yarn ejection unit 60, making it more susceptible to damage (e.g., breakage). FIG. 8 is a diagram showing the yarn path when the S-twisted yarn Y is guided to the yarn storage device 40 with the yarn ejection unit 60 positioned at the first position P1.

Therefore, when the S-twisted yarn Y is guided to the yarn storage device 40, the position of the yarn spouting section 60 is set to a position different from the first position P1. Specifically, in the example shown in FIG. 7, when the S-twisted yarn Y is guided to the yarn storage device 40, the yarn spouting section 60 is placed to the left of the center line of the storage roller 41. In addition, the end of the yarn spouting section 60 on the yarn storage device 40 side is directed outward from the yarn storage device 40 with respect to the tangent line from the end to the left side surface of the storage roller 41 (i.e., the yarn path of the S-twisted yarn Y). The yarn guiding position when the S-twisted yarn Y is guided from the yarn supplying section 6 side to the yarn storage device 40 is set to the second position P2. The second position P2 and the first position P1 are in a line-symmetrical relationship with respect to the center line of the yarn storage device 40 (storage roller 41).

Since the second position P2 is located to the left of the center line of the yarn storage device 40 and faces outward from the yarn storage device 40 with respect to the tangent line from the end of the yarn ejection section 60 to the side of the storage roller 41, when the S-twisted yarn Y is cut, the cut yarn Y does not fly out from the end of the yarn ejection section 60 and collide with the yarn storage device 40 (storage roller 41). As a result, it is possible to prevent the yarn Y from colliding with the yarn storage device 40, causing a yarn to pass through or have a double end, and the S-twisted yarn Y can be properly guided to the yarn storage device 40.

In the moving part 90 described with reference to Figures 5 and 6, when one end of the first arm 92 abuts against the position on the side surface PH of the cam 91 that is farthest from the origin O (referred to as the first outer peripheral position PH1), the yarn spouting part 60 is positioned at the second position P2.

Next, the yarn pull-out position will be described. As shown in FIG. 7, the yarn pull-out position is common to both Z-twist yarn Y and S-twist yarn Y, and is located on the center line of the yarn storage device 40 (storage roller 41). In other words, the yarn pull-out position is a position halfway between the first position P1 and the second position P2 (called the third position P3). By locating the yarn pull-out position on the center line of the yarn storage device 40, the distance between the storage roller 41 and the end of the yarn ejection unit 60 on the yarn storage device 40 side can be reduced. As a result, the yarn ejection unit 60 can easily pull out the yarn Y from the yarn storage device 40 by suction.

In the moving part 90 described with reference to Figures 5 and 6, when one end of the first arm 92 abuts on the side PH of the cam 91 at an intermediate position (called the second outer circumferential position PH2) between the origin O and the first outer circumferential position PH1 (as shown in Figure 6), the yarn spouting part 60 is arranged to be located at the third position P3. In addition, before and after the second outer circumferential position PH2 of the side PH of the cam 91, the distance from the side PH to the first axis A1 is constant. As a result, even if the cam 91 rotates further in either direction after rotating the cam 91 to a position where the first arm 92 abuts at the second outer circumferential position PH2, the yarn spouting part 60 can be maintained at the third position P3.

When the origin O of the side surface PH of the cam 91, the first outer peripheral position PH1, and the second outer peripheral position PH2 are in the positional relationship as described above, the control unit 25 rotates the cam 91 in a first direction (counterclockwise in the example of Figs. 5 and 6), so that the yarn spouting unit 60 moves from the yarn pull-out position (third position P3) to the first position P1 where the Z-twisted yarn Y is guided. On the other hand, by rotating the cam 91 in a second direction (clockwise in the example of Figs. 5 and 6) opposite to the first direction, the yarn spouting unit 60 moves from the yarn pull-out position to the second position P2 where the S-twisted yarn Y is guided. As a result, by rotating the cam 91 in the opposite direction, the yarn spouting unit 60 can be moved from the third position P3 to the first position P1, or from the third position P3 to the second position P2, making it easier to control the yarn spouting unit 60.

(3) Operation of the Winder Unit The operation of the winder unit will be described below. When the winder unit 2 starts up, an initial operation for forming the package 30 is performed in the winder unit 2. In this initial operation, the yarn spouting part 60 is moved to the origin position. Specifically, the control unit 25 rotates the cam 91 so that one end of the first arm 92 abuts against the origin O of the side surface PH of the cam 91, thereby moving the yarn spouting part 60 to the first position P1. In this way, the origin position of the yarn spouting part 60 is the first position P1.

After the initial operation, the winder unit 2 starts forming the package 30. The formation of the package 30 is performed according to the flowchart shown in FIG. 9. FIG. 9 is a flowchart showing the operation of forming the package 30 in the winder unit 2. FIG. 9 shows a flowchart for forming one package 30.

When the formation of the package 30 starts, in step S1, the control unit 25 determines the type of yarn Y to be used to form the package 30. The type of yarn Y to be used to form the package 30 can be set, for example, by the operator operating the machine control device 3.

If the type of yarn Y is a Z-twist yarn ("Z-twist" in step S1), the control unit 25 moves the yarn spouting unit 60 to the first position P1 in order to guide the Z-twist yarn Y to the yarn storage device 40 (step S2). Specifically, the control unit 25 rotates the cam 91 so that one end of the first arm 92 abuts against the origin O of the side surface PH of the cam 91, thereby moving the yarn spouting unit 60 to the first position P1. As described above, in the initial state, the yarn spouting unit 60 is located at the first position P1. Therefore, when the package 30 is first formed after the winder unit 2 is started, the control unit 25 does not move the yarn spouting unit 60 from the first position P1 (origin position).

On the other hand, if the type of yarn Y is an S-twist yarn ("S-twist" in step S1), the control unit 25 moves the yarn ejection unit 60 to the second position P2 to guide the S-twist yarn Y to the yarn storage device 40 (step S3).

After that, winding of the yarn is started to form the package 30 (step S4). In step S4, the yarn Y released from the yarn supplying bobbin 21 is guided by the yarn guide unit 7 to the yarn storage device 40, where it is temporarily stored in the yarn storage device 40 (storage roller 41). The yarn Y stored in the yarn storage device 40 is wound onto the winding bobbin 22 to form the package 30. At this time, when Z-twisted yarn Y is used, the yarn ejection unit 60 is positioned at the first position P1, and when S-twisted yarn Y is used, the yarn ejection unit 60 is positioned at the second position P2. This allows the yarn Y to be appropriately guided to the yarn storage device 40 depending on the type of yarn Y used.

When the yarn Y starts to be stored in the yarn storage device 40 in step S4, the control unit 25 monitors the tension of the yarn Y guided by the yarn guide unit 7, and may stop the rotation of the storage roller 41 or cut the yarn Y if the tension of the yarn Y exceeds a predetermined threshold. This prevents the yarn Y from being cut due to a loss of tension at the beginning of winding immediately after thread joining, which can lead to a passing yarn.

During winding of the yarn Y, the control unit 25 determines in step S5 whether or not a break in the yarn Y has occurred due to cutting of the yarn Y by the cutter 15, breakage of the yarn Y while being unwound from the yarn supplying bobbin 21, replacement of the yarn supplying bobbin 21, etc. If a break in the yarn Y has not occurred ("No" in step S5), the operation of forming the package 30 proceeds to step S10.

On the other hand, if the yarn Y breaks ("Yes" in step S5), the control unit 25 stops winding the yarn Y onto the winding bobbin 22 in step S6. Then, in step S7, the control unit 25 moves the yarn ejection unit 60 to the third position P3 for pulling out the yarn Y from the yarn storage device 40. Specifically, the control unit 25 rotates the cam 91 so that one end of the first arm 92 abuts against the second outer periphery position PH2 of the side surface PH of the cam 91, thereby moving the yarn ejection unit 60 to the third position P3.

After moving the yarn ejection unit 60 to the third position P3, the yarn ejection unit 60 draws the end of the yarn Y on the yarn storage device 40 side from the yarn storage device 40 by sucking it inward, and blows the drawn-out yarn Y toward the yarn guide member 80 (step S8). As a result, the end of the yarn Y on the yarn storage device 40 side moves along the guide path in the yarn guide member 80 to the first capture unit 13A and is captured by the first capture unit 13A. After that, the yarn Y inside the yarn guide member 80 is pulled out from a slit provided in the yarn guide member 80 and guided to the yarn joining device 14. In addition, the end of the yarn Y on the yarn supply unit 6 side is captured by the second capture unit 13B located at the capture position, and is guided to the yarn joining device 14.

After the end of the yarn Y on the yarn storage device 40 side and the end of the yarn Y on the yarn supplying section 6 side are guided to the yarn joining device 14, these ends of the yarn Y are joined by the yarn joining device 14 (step S9). After the joining is completed, winding of the yarn Y onto the package 30 is resumed. In other words, the operation of forming the package 30 returns to step S4.

When winding of the yarn Y is resumed, if the package 30 is formed using Z-twisted yarn Y, the control unit 25 moves the yarn ejection unit 60 from the third position P3 to the first position P1. Specifically, the control unit 25 rotates the cam 91 in the first direction to change the contact position between the first arm 92 and the side surface PH of the cam 91 from the second outer periphery position PH2 to the origin O, and moves the yarn ejection unit 60 from the third position P3 to the first position P1.

On the other hand, when the package 30 is formed using S-twisted yarn Y, the control unit 25 moves the yarn ejection unit 60 from the third position P3 to the second position P2. Specifically, the control unit 25 rotates the cam 91 in the second direction to change the contact position between the first arm 92 and the side surface PH of the cam 91 from the second outer peripheral position PH2 to the first outer peripheral position PH1, and moves the yarn ejection unit 60 from the third position P3 to the second position P2.

After moving the yarn ejection unit 60 to the first position P1 (in the case of Z twist) or the second position P2 (in the case of S twist), the control unit 25 resumes winding of the yarn Y.

During winding of the yarn Y, the control unit 25 determines in step S10 whether a specified amount of yarn Y has been wound onto the winding bobbin 22 and the formation of the package 30 has been completed. If the formation of the package 30 has not been completed ("No" in step S10), the control unit 25 continues winding the yarn Y.

On the other hand, when the formation of the package 30 is completed ("Yes" in step S10), the control unit 25 stops winding the yarn Y (step S11) and ends the formation of the package 30. The formed package 30 is removed from the package forming section 8 by the doffing device 5 and transported to a predetermined position. Thereafter, if another package 30 is to be formed in the winder unit 2, the above steps S1 to S11 are executed again.

In this way, in the winder unit 2, the moving section 90 moves the yarn ejection section 60 between a yarn guide position (i.e., first position P1, second position P2) where the yarn Y supplied from the yarn supplying section 6 is guided to the yarn storage device 40, and a yarn pull-out position (i.e., third position P3) where the yarn Y stored in the yarn storage device 40 is pulled out and ejected toward the yarn supplying section 6. This allows the winder unit 2 to appropriately guide the yarn Y to the yarn storage device 40 and guide the yarn Y from the yarn storage device 40 to the yarn supplying section 6.

2. Other embodiments Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the invention. In particular, the multiple embodiments and modifications described in this specification can be arbitrarily combined as necessary.
(A) The process contents of each step in the flowchart of FIG. 9 showing the operation of the winder unit 2 and the order in which each step is executed can be changed as desired without departing from the spirit and scope of the invention.

(B) In the first embodiment described above, the pull-out position for pulling out the yarn Y from the yarn storage device 40 was the third position P3, which was common to both the Z-twisted yarn Y and the S-twisted yarn Y. This is not limiting, and the yarn pull-out position for the Z-twisted yarn Y may be different from the yarn pull-out position for the S-twisted yarn Y. Specifically, when pulling out the Z-twisted yarn from the yarn storage device 40, the yarn ejection unit 60 may be moved to the fourth position, and when pulling out the S-twisted yarn from the yarn storage device 40, the yarn ejection unit 60 may be moved to the fifth position. The fourth position may be, for example, a position slightly closer to the first position P1 than the third position P3. Also, the fifth position may be, for example, a position slightly closer to the second position P2 than the third position P3.

In this way, by differentiating the yarn pull-out position of Z-twisted yarn Y from the yarn pull-out position of S-twisted yarn Y, an appropriate yarn pull-out position can be set according to the twist of yarn Y.

(C) In the first embodiment described above, the yarn supplying section 6 supplies the yarn Y unwound from the yarn supplying bobbin 21. That is, the winder unit 2 in the first embodiment is an automatic winder. This is not limiting, and other types of yarn supplying sections 6 can also be used. For example, the yarn supplying section 6 may supply the yarn Y spun by air force. That is, the winder unit 2 may be an air spinning machine.

(D) Alternatively, the yarn supplying section 6 may supply the yarn Y spun by the rotational force of the rotor. In other words, the winder unit 2 may be an open-end spinning machine.

(E) The moving unit 90 may have any configuration that can move the yarn ejection unit 60, in addition to the configuration described using Figures 5 and 6.

3. Features of the embodiment The above embodiment can also be explained as follows.
(1) A yarn winding device (e.g., winder unit 2) includes a supplying unit (e.g., yarn supplying unit 6), a yarn storage device (e.g., yarn storage device 40), a winding unit (e.g., package forming unit 8), a yarn joining device (e.g., yarn joining device 14), a yarn spouting unit (e.g., yarn spouting unit 60), and a moving unit (e.g., moving unit 90). The supplying unit supplies a yarn (e.g., yarn Y). The yarn storage device stores the yarn supplied from the supplying unit. The winding unit winds up the yarn stored in the yarn storage device to form a package (e.g., package 30). When the yarn is broken between the supplying unit and the yarn storage device, the yarn joining device joins the yarn on the supplying unit side and the yarn on the yarn storage device side.

The yarn ejection unit guides the yarn supplied from the supply unit to the yarn storage device. The yarn ejection unit also ejects air in the direction from the yarn storage device toward the supply unit to pull out the yarn stored in the yarn storage device and eject it toward the supply unit, thereby guiding the yarn to the yarn joining device. The moving unit moves the yarn ejection unit between a yarn guide position and a yarn pull-out position. The yarn guide position is the position of the yarn ejection unit when guiding the yarn supplied from the supply unit to the yarn storage device. The yarn pull-out position is the position of the yarn ejection unit when pulling out the yarn stored in the yarn storage device and ejecting it toward the supply unit.

In the above-mentioned yarn winding device, the moving unit moves the yarn ejection unit between a yarn guiding position where the yarn supplied from the supply unit is guided to the yarn storage device, and a yarn pull-out position where the yarn stored in the yarn storage device is pulled out and ejected toward the supply unit. In this way, the yarn winding device can move the yarn ejection unit to the optimal position for guiding the yarn supplied from the supply unit to the yarn storage device, and the optimal position for pulling out the yarn stored in the yarn storage device and ejecting it toward the supply unit, so that the yarn can be appropriately guided to the yarn storage device and from the yarn storage device to the supply unit.

(2) In the yarn winding device of (1) above, the yarn guiding positions may include a first position (e.g., first position P1) for guiding a Z-twisted yarn to the yarn storage device, and a second position (e.g., second position P2) for guiding an S-twisted yarn to the yarn storage device. This allows yarns of different twists (Z twist, S twist) to be appropriately guided to the yarn storage device.

(3) In the yarn winding device of (2) above, the first position and the second position may be in a line-symmetric relationship with respect to the center of the yarn storage device. This allows the first position and the second position to be set appropriately.

(4) In the yarn winding device of (2) or (3) above, the yarn pull-out position may be a third position intermediate between the first position and the second position. This allows an appropriate yarn pull-out position to be set.

(5) In the yarn winding device described above in (1) to (3), the yarn pull-out positions may include a fourth position where the Z-twisted yarn is pulled out from the yarn storage device, and a fifth position where the S-twisted yarn is pulled out from the yarn storage device. This allows an appropriate yarn pull-out position to be set according to the yarn twist.

(6) In the yarn winding device of (1) to (5) above, the yarn storage device may have a storage roller (e.g., storage roller 41). The storage roller winds and stores the yarn. In this case, the yarn guiding position may be a position where the end of the yarn ejection section on the yarn storage device side faces outward from the yarn storage device with respect to the tangent line from said end to the side of the storage roller. This prevents the cut yarn from hitting the yarn storage device (storage roller) when the yarn breaks, and allows the yarn to be properly guided.

(7) In the yarn winding device of (1) to (6) above, the moving part may have a cam (e.g., cam 91), a first arm (e.g., first arm 92), and a second arm (e.g., second arm 93). The cam is rotatable around a first axis (e.g., first axis A1). One end of the first arm abuts against a side surface (e.g., side surface PH) of the cam, and the other end is fixed rotatably around a second axis (e.g., second axis A2), and rotates around the second axis in accordance with the rotation of the cam. The second arm has a yarn ejection part fixed to one end, and the other end is fixed rotatably around the second axis together with the other end of the first arm. The second arm moves the yarn ejection part to a yarn guiding position and a yarn pulling position in accordance with the rotation of the first arm. This allows the yarn ejection part to be appropriately moved between the yarn guiding position and the yarn pulling position.

(8) In the yarn winding device of (7) above, when one end of the first arm abuts against the origin position of the cam (e.g., origin O), the yarn ejection section may be located at a first position that guides the Z-twisted yarn to the yarn storage device. This makes it easier to control the yarn ejection section by setting the origin at a position where the yarn ejection section is moved relatively frequently.

(9) In the yarn winding device of (7) to (8) above, the moving unit may rotate the cam in a first direction to move the yarn ejection unit from the yarn pull-out position to a first position where the yarn ejection unit guides the Z-twisted yarn to the yarn storage device. Also, the moving unit may rotate the cam in a second direction opposite to the first direction to move the yarn ejection unit from the yarn pull-out position to the second position where the yarn ejection unit guides the S-twisted yarn to the yarn storage device. This makes it easier to control the yarn ejection unit.

(10) In the yarn winding device described above in (1) to (9), the supply unit may supply the yarn unwound from the yarn supplying bobbin. This allows an automatic winder having a yarn storage device to properly guide the yarn to the yarn storage device and to properly guide the yarn from the yarn storage device to the supply unit.

(11) In the yarn winding device described above in (1) to (9), the supply unit may supply the yarn spun by air force. This allows an air spinning machine having a yarn storage device to properly guide the yarn to the yarn storage device and from the yarn storage device to the supply unit.

(12) In the yarn winding device described above in (1) to (9), the supply unit may supply the yarn spun by the rotational force of the rotor. This allows the yarn to be appropriately guided to the yarn storage device and from the yarn storage device to the supply unit in an open-end spinning machine having a yarn storage device.

This invention can be widely applied to yarn winding devices.

1: Automatic winder 2: Winder unit 3: Machine control device 4: Yarn supplying bobbin supply device 5: Doffing device 6: Yarn supplying section 7: Yarn guiding section 8: Package forming section 10: Unwinding assist device 11: Lower yarn feeler 12: Tension applying section 13: Capture device 13A: First capture section 13B: Second capture section 14: Yarn splicing device 15: Cutter 16: Yarn monitoring device 19: Housing 21: Yarn supplying bobbin 22: Winding bobbin 23: Cradle 24: Traverse drum 25: Control section 26: Transport tray 27: Movable member 28: Auxiliary blowing section 30: Package 37: Pull-out guide 40: Yarn storage device 41: Storage roller 41a: Tapered section 41b: Tapered section 41c: Cylindrical section 41d: Outer circumferential surface 41e: End section 41f : end 41g : inner peripheral surface 42 : ring member 43a : first recess 45 : drive motor 47 : cover 47a : opposing surface 50 : detection unit 51 : housing 53 : detection section 53A : line sensor 53B : lens 55 : light emitting section 55A : LED board 55B : light source 55C : optical waveguide 60 : yarn spouting section 70 : wax application device 80 : yarn guiding member 90 : moving section 91 : cam 91A : first pulley 91B : belt 91C : second pulley 91D : motor 92 : first arm 93 : second arm 94 : position sensor A : storage area A1 : first axis A2 : second axis C1 : rotation axis CH : housing L1 : first straight line L2 : second straight line O : origin P1 : first position P2 : second position P3 : Third position PH : Side surface PH1 : First outer peripheral position PH2 : Second outer peripheral position ST1 : Straight section Y : Yarn

Claims (12)

A supply unit that supplies a yarn;
a yarn storage device that stores the yarn supplied from the supply unit;
a winding section that winds the yarn stored in the yarn storage device to form a package;
a yarn joining device that joins the yarn on the supplying unit side and the yarn on the yarn pooling device side when the yarn is broken between the supplying unit and the yarn pooling device;
a yarn ejection unit that guides the yarn supplied from the supply unit to the yarn pooling device, and ejects air from the yarn pooling device in a direction toward the supply unit to draw out the yarn stored in the yarn pooling device and eject the air toward the supply unit, thereby guiding the yarn to the yarn joining device;
a moving unit that moves the yarn spouting unit to a yarn guiding position when guiding the yarn supplied from the supply unit to the yarn pooling device, and to a yarn pulling-out position when pulling out the yarn pooled in the yarn pooling device and spraying it toward the supply unit;
A yarn winding device comprising: The yarn winding device according to claim 1, wherein the yarn guiding positions include a first position for guiding a Z-twisted yarn to the yarn storage device and a second position for guiding an S-twisted yarn to the yarn storage device. The yarn winding device according to claim 2, wherein the first position and the second position are in a line-symmetric relationship with respect to the center of the yarn storage device. The yarn winding device according to claim 2 or 3, wherein the yarn pull-out position is a third position intermediate between the first position and the second position. The yarn winding device according to any one of claims 1 to 3, wherein the yarn pulling positions include a fourth position where the Z-twisted yarn is pulled out from the yarn storage device, and a fifth position where the S-twisted yarn is pulled out from the yarn storage device. The yarn storage device has a storage roller that winds and stores the yarn,
The yarn winding device according to any one of claims 1 to 5, wherein the yarn guiding position is a position where an end of the yarn spouting portion on the yarn pooling device side faces outwardly relative to a tangent line from the end to a side surface of the pooling roller relative to the yarn pooling device. The moving unit is
A cam rotatable about a first axis;
a first arm having one end that abuts against a side surface of the cam and the other end that is fixed rotatably about a second axis, the first arm rotating about the second axis in accordance with the rotation of the cam;
a second arm having one end to which the yarn spouting part is fixed and the other end to be rotatable around the second axis together with the other end of the first arm, the second arm moving the yarn spouting part between the yarn guiding position and the yarn pulling position in accordance with the rotation of the first arm;
The yarn winding device according to any one of claims 1 to 6, further comprising: The yarn winding device according to claim 7, wherein when one end of the first arm abuts against the origin position of the cam, the yarn ejection section is located at a first position where the Z-twisted yarn is guided to the yarn storage device. The moving unit is
By rotating the cam in a first direction, the yarn ejection unit is moved from the yarn pull-out position to a first position where the yarn ejection unit guides the Z-twisted yarn to the yarn pooling device;
9. The yarn winding device according to claim 7 or 8, wherein the yarn ejection part is moved from the yarn pull-out position to a second position where the yarn ejection part guides the S-twisted yarn to the yarn pooling device by rotating the cam in a second direction opposite to the first direction. The yarn winding device according to any one of claims 1 to 9, wherein the supply unit supplies yarn unwound from a yarn supply bobbin. The yarn winding device according to any one of claims 1 to 9, wherein the supply unit supplies yarn spun by air force. The yarn winding device according to any one of claims 1 to 9, wherein the supply section supplies the yarn spun by a rotational force of a rotor.

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